Analysis
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max time kernel
180s -
max time network
180s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 01:24
Static task
static1
Behavioral task
behavioral1
Sample
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe
Resource
win10-en-20211208
General
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Target
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe
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Size
166KB
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MD5
eae6610db384610ede43f9b441597d19
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SHA1
d3e189d45baf5429eba80a7b8d64551d8f00d3d1
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SHA256
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5
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SHA512
ece1f2f33f98b443b24f243e867ab92766ddbd2dab9a6dbeecff293e096c6ddfce019978dca0eae740cae88f27c5dd6bccdf9bcce924422593960e74b8a4b71c
Malware Config
Extracted
C:\px275-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/FB51C4977B6394D3
http://decryptor.cc/FB51C4977B6394D3
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription ioc process File opened for modification \??\c:\users\admin\pictures\ExportUnblock.tiff a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\users\admin\pictures\PingAssert.tiff a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\users\admin\pictures\SuspendUse.tiff a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\BackupFormat.png => \??\c:\users\admin\pictures\BackupFormat.png.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\ExpandUpdate.raw => \??\c:\users\admin\pictures\ExpandUpdate.raw.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\SuspendUse.tiff => \??\c:\users\admin\pictures\SuspendUse.tiff.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\users\admin\pictures\HideStep.tiff a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\ConnectRestart.png => \??\c:\users\admin\pictures\ConnectRestart.png.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\HideStep.tiff => \??\c:\users\admin\pictures\HideStep.tiff.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\SplitExit.crw => \??\c:\users\admin\pictures\SplitExit.crw.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\BackupAssert.raw => \??\c:\users\admin\pictures\BackupAssert.raw.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\PingAssert.tiff => \??\c:\users\admin\pictures\PingAssert.tiff.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\ExportSuspend.png => \??\c:\users\admin\pictures\ExportSuspend.png.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File renamed C:\Users\Admin\Pictures\ExportUnblock.tiff => \??\c:\users\admin\pictures\ExportUnblock.tiff.px275 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\oXnEn2JlQT = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe" a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription ioc process File opened (read-only) \??\Z: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\B: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\F: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\H: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\K: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\W: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\X: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\L: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\N: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\Q: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\S: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\T: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\V: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\E: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\G: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\M: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\Y: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\U: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\D: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\A: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\I: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\J: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\O: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\P: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened (read-only) \??\R: a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\y2064.bmp" a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Drops file in Program Files directory 15 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription ioc process File created \??\c:\program files\px275-readme.txt a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\OptimizeLock.csv a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\RestartOpen.aiff a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File created \??\c:\program files (x86)\px275-readme.txt a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\CompleteSend.docm a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\WaitProtect.wps a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\SkipRestart.mpeg2 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\DenyWrite.mpeg3 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\ImportConvertTo.htm a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\RepairSkip.cr2 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\StartConvert.wps a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\TraceExpand.htm a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\AssertConvertFrom.ps1xml a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\ExportSubmit.shtml a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe File opened for modification \??\c:\program files\OptimizeUnblock.ex_ a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exepowershell.exepid process 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe 3948 powershell.exe 3948 powershell.exe 3948 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe Token: SeDebugPrivilege 3948 powershell.exe Token: SeBackupPrivilege 2380 vssvc.exe Token: SeRestorePrivilege 2380 vssvc.exe Token: SeAuditPrivilege 2380 vssvc.exe Token: SeTakeOwnershipPrivilege 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exedescription pid process target process PID 3496 wrote to memory of 3948 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe powershell.exe PID 3496 wrote to memory of 3948 3496 a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe"C:\Users\Admin\AppData\Local\Temp\a5a2f608fbd40bf76178db66e7e789fbbabb3b35fc284be1c10615dbfa0853c5.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3496 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3948
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:656
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2380
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3948-119-0x000002A029720000-0x000002A029722000-memory.dmpFilesize
8KB
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memory/3948-120-0x000002A029723000-0x000002A029725000-memory.dmpFilesize
8KB
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memory/3948-121-0x000002A029810000-0x000002A029832000-memory.dmpFilesize
136KB
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memory/3948-124-0x000002A041B30000-0x000002A041BA6000-memory.dmpFilesize
472KB